[En] GTK+ (GIMP Toolkit) is a cross-platform widget toolkit for creating graphical user interfaces. It is one of the most popular toolkits for the X Window System, along with Qt.Some X-Software needs this library to work; the library is just included in softwares and winPenPack packages.

Estrazione e uso/How to extract and use:[It] Decomprimere l'archivio ZIP e copiare il contenuto della sottocartella Gtk in "winPenPack"\Lib\GTK[/link].[En] Extract the ZIP package to any folder of your choice and copy the content of the subfolder Gtk in "winPenPack"\Lib\GTK[/link].